I'd give Comcast a call. Not exactly the cheapest, but they do have a couple of tiers for their internet only, they will install lines as part of the deal, may or may not charge for that. In my case they didn't. Not sure how your house is laid out, but in my case access to upstairs was available from the basement. And you can always set up modem and router where they can get to and go from there.
But the service is good. I rarely have outages and can stream two movies from netflix at the same time without any issues. Not on the same computer, but you get my drift.
SeaSonic M12II 620W, ASUS M4A87TD EVO AM3 AMD 870, AMD Phenom II X4 925 Deneb 2.8GHz, Crucial 8GB (4 x 2GB) DDR3 1333, SAPPHIRE Radeon HD 6850, Kingston HyperX 120G 120GB Solid State Boot Drive, WD Caviar 1 TB Storage Drive, LG DVD-RW, Samsung SyncMaster 226bw 21" LCD, Windows 7 Home Premium 64bit